KR101589417B1 - Hot water heating systems using thermal oil as heat accumulation substance - Google Patents

Abstract

The present invention relates to a hot water heating device using heat medium oil and a thermal storage material rapidly and stably heating hot water to save maintenance costs. The present invention comprises: a first heat exchanging unit heating heat medium oil; a second heat exchanging unit arranging a heat medium oil heat exchanging pipe and a hot water heat exchanging pipe to exchange heat; and a third heat exchanging unit arranging the hot water heat exchanging pipe where hot water returned to a hot water tank via the second heat exchanging unit to pass through to the inside of a second heat medium tank to exchange heat or a third heat exchanging unit arranging the hot water heat exchanging pipe to enable the hot water supplied from the hot water tank to the second heat exchanging unit to be preheated and supplied to the inside of the second heat medium tank via the second heat exchanging unit to exchange heat.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a hot water heating system using a thermal oil and a heat storage material,

The present invention is directed to a method for heating a heat storage material that is heat-exchanged with hot water by using a heating medium heated by a heating means so as to be applicable to an electric boiler and the like, thereby heating the hot water stably, The present invention relates to a hot water heating apparatus using heat oil and heat storage material that can be expected to use, and more particularly, to a hot water heating apparatus using a heat oil and a heat storage material Thereby providing a hot water heating device.

In the case of boilers used for industrial residential use, oil boilers using fuel as fuel and electric boilers using electricity are used.

The electric boiler described above is constructed so that a large amount of water stored in the storage tank is simply heated using electricity of the night time zone (from 10:00 pm to 8:00 am the following day), and heating with the heat stored in the weekday time zone In particular, the development of energy-saving boilers has been urgently needed in Korea, where there are no resources such as oil and gas used as energy sources, and the installation cost and the operating cost are inevitably increased.

In order to provide an electric boiler capable of saving energy enormously, it is necessary to develop a heat storage material capable of efficiently storing a large amount of heat and consuming as much heat as required while using stored heat, .

Storage materials having excellent storage stability have been developed by the above-mentioned intention. Typical examples thereof include silicon dioxide (SiO 2) and water, which are prepared by adding various inorganic substances thereto (patent No. 0420008 (2004.03 (Mg), potassium (K), sodium (Na), iron (Fe), and the like Is mixed with water to obtain an inorganic slurry, which is provided as a heat storage material for a boiler.

The above-mentioned heat storage material can be used for electric power using the heat storage material of the registered Korean Utility Model (Y1) 20-0316469 (2003.06.18.), 20-0428527 (October 13, 2006), 20-0442961 It has been used as a boiler.

However, most of the electric boilers are small-sized, and the heat storage tank is located in the heating oil.

In such a case, there is a considerable effect in increasing the thermal efficiency, but there is a problem that the whole of the electric boiler must be disposed because the medium oil flows into the heat storage tank where cracks and the like are generated due to thermal expansion of the heat storage tank due to thermal expansion of the heat storage material.

In addition, since the electric heater is horizontally installed at the lower end of the media tank, the medium oil and the electric heater are configured to be separated from each other in order to solve the inconvenience of discharging the heat oil at the time of fixing the electric heater. However, And the thermal efficiency is lowered.

On the other hand, in the 20-0428527 (October 13, 2006), the electric heater is installed in a vertical shape to solve the above problems. In this case, since a part of the electric heater is exposed to the atmosphere in the state before the medium oil is heated, the thermal efficiency problem is not completely solved, and the exposed part is overheated in the heat generation process to shorten the life of the electric heater Causing frequent electric heater breakdowns.

KR 100420008 B1 2004.03.02. KR 200316469 Y1 2003.06.18. KR 200428527 Y1 Oct. 13, 2006. KR 200442961 Y1 Dec 26, 2008.

Accordingly, the present inventor has found that there is a problem caused by the expansion and contraction of a heat storage tank which is emerging as a problem in an electric boiler (hot water heating apparatus) using a conventional heat storage material, and a problem caused by replacement of an electric heater used as a heating means And a large amount of hot water can be heated in a short time. The present invention has been completed based on the technical problem of the present invention.

That is, according to the present invention, there is provided a heat exchanger comprising: a first heat exchanger for heating a heat medium oil; a second heat exchanger for heating the heat medium flow path heat accumulating material and heating the hot water using latent heat of the heat accumulating material; A third heat exchanging unit for heating the hot water by using the returning heat medium oil is provided separately, thereby maximizing the efficiency of the hot water heating. In addition, the convenience of maintenance due to the thermal expansion of the heat storage tank or the failure of the electric heater And the like.

In accordance with the present invention, there is provided a method for circulating hot water through circulation of a heating medium and a heating medium oil by heating a heat storage material to be heat-exchanged with hot water supplied from a hot water tank by using a heating medium oil heated by a first heating means A hot water heating apparatus using heat medium oil and heat storage material for controlling a hot water pump by a control unit,

A first heat exchanger for heating the thermal oil introduced into the fruit body by an electric heater serving as a heating means; A second heat exchanger for piping a heat exchange heat exchanging pipe through which the heating medium oil heated by the first heat exchanging unit passes and a hot water heat exchanging pipe connected to the hot water tank and passing hot water through the heat storage material inside the heat storage tank, A third heat exchange tube for heat exchanging the hot water heat exchange tube through which the hot water returning to the hot water tank passes through the second heat exchanger to the inside of the second heat exchanger in which the heat medium oil returning from the second heat exchanger to the first heat exchanger is introduced, And a plurality of signal lines.

Second, by using the heating medium heated by the heating means, the heating medium and the heat medium which circulates the heating medium are heated by the hot water supplied from the hot water tank, and the hot water pump for circulating hot water is controlled by the control unit A hot water heating apparatus using a heat medium oil and a heat storage material,

A first heat exchanger for heating the thermal oil introduced into the fruit body by an electric heater serving as a heating means; A second heat exchanger for piping a heat exchange heat exchanging pipe through which the heating medium oil heated by the first heat exchanging unit passes and a hot water heat exchanging pipe connected to the hot water tank and passing hot water through the heat storage material inside the heat storage tank, The hot water heat exchanger tube is piped so that the hot water supplied from the hot water tank to the second heat exchanger section is preheated and supplied to the inside of the second heat medium body in which the heat medium oil returning from the second heat exchanger section to the first heat exchanger is introduced, And a third heat exchanging unit.

Third, the electric heater, which is a heating means installed in the first heat exchanging unit, is assembled vertically to the fruit body.

Fourth, the heater rod of the heating means inserted into the above-mentioned fruit body gymn may be provided with a non-heating portion in which the heating medium oil is not immersed in the heating medium oil in a non-heated state and a heating portion in which the heating medium is immersed in the heating medium oil.

Fifth, the second heat exchanging unit is provided with a hot water supply tank and a hot water discharge tank on both sides of the heat storage tank in which the heat storage material is inserted, and the hot water supply tank and the hot water discharge tank are horizontally provided with a plurality of hot water heat exchange tubes passing through the heat storage tank, And a heat medium heat exchanger tube is spirally arranged outside the hot water heat exchanger tube.

The use of the hot water heating device using the thermal oil and the heat storage material provided in the present invention has the following effects.

- Since the first heat exchanger for heating the heat medium oil and the second heat exchanger for heating the heat accumulating material are separately constituted, when the failure of the electric heater serving as the heating means or the expansion and contraction of the heat storage tank causes an abnormality such as crack, It is possible to respond.

- Since it is installed vertically by heating means in the fruit body, it is possible to replace the heating means without loss of the heat medium oil.

- Since the heating means is partitioned into a heating portion and a non-heating portion, there is no problem due to thermal efficiency when heating oil is heated.

- The heat source included in the thermal oil can be supplied to the hot water by using the second heat exchanger and the third heat exchanger, so that the heating ability of the hot water can be increased.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic plan view showing a preferred embodiment of a hot water heating apparatus using thermal oil and a heat storage material,
2 is a schematic plan view showing another embodiment of the hot water heating device using the thermal oil and the heat storage material provided in the present invention.
3 is a front sectional view and a side sectional view of the first heat exchanger applied to the present invention;
4 is a front view showing a preferred example of the heating means applied to the first heat exchanging portion of the present invention
5 is a sectional view of the second heat exchanger applied to the present invention
Fig. 6 is a side sectional view of Fig. 5
7 is a cross-sectional view of the third heat exchanger applied to the present invention

Hereinafter, an embodiment of the hot water heating apparatus 1 using the thermal oil (A) and the heat storage material (B) provided in the present invention will be described with reference to the accompanying drawings.

1 is a schematic plan view showing a preferred embodiment of a hot water heating apparatus 1 using a thermal oil (A) and a heat storage material (B) according to the present invention.

The hot water heating device 1 using the thermal oil (A) and the heat storage material (B) provided in the present invention is a hot water heating device (1) using hot oil (A) heated by a heating means (52) (2) for circulating the heating means (52) and the heating medium oil (A) by heating the heat storage material (B) to be heat-exchanged with the control unit (4) And is constituted by the first to third heat exchanging parts 5, 6, and 7. [

The first heat exchanger 5 is configured to heat the heat medium oil A introduced into the fruit body 51 by an electric heater serving as a heating means 52. The second heat exchanger 6 has a first heat exchanger The heat storage material B in the heat storage tank 61 is heated by the heating medium heat exchange tube 62 through which the heating medium oil A heated from the heat exchange unit 5 passes and the hot water heat exchange And the third heat exchanging part 7 is arranged to heat the hot water passing through the pipe 63. The third heat exchanging part 7 serves to heat the hot water passing through the pipe 63 from the second heat exchanging part 6 to the first heat exchanging part 5, The hot water returning to the hot water tank 8 via the two-heat exchanging unit 6 is heated again.

In the case of the above configuration, the thermal oil A circulates in the first heat exchanger 5 through the second heat exchanger 6 and the third heat exchanger 7 and is returned to the first exchanger. The hot water is returned to the hot water tank 8 To the second heat exchanging unit 6 and the third heat exchanging unit 7, and then return to the hot water tank 8 through the hot water pipe 9.

2 is a schematic plan view showing another embodiment of the hot water heating device 1 using the thermal oil and the heat storage material provided in the present invention.

2, the first to third heat exchanging units 5, 6, and 7 are constructed so that the hot water supplied to the second heat exchanging unit 6 is supplied in a preheated state.

1, the heat medium oil A is circulated through the second heat exchanger 6 and the third heat exchanger 7 in the first heat exchanger 5 to return to the first heat exchanger 5 The hot water tank 8 can return to the hot water tank 8 after circulating to the third heat exchanging unit 7 and the second heat exchanging unit 6 in the case of hot water.

In the case of such a configuration, there is no significant influence on the hot water heating in the state where hot water is not used. However, when the hot water is continuously used, the hot water which flows in is returned to the first heat exchanging part (5) And the heat is supplied to the third heat exchanger 7 in a state where the heat is preheated, so that the thermal efficiency can be increased.

On the other hand, the medium pump (2) is installed in the heat medium oil pipe (54) piped to the outside of the first heat exchanger (5) and the hot water pipe (9) connected to the hot water tank Respectively.

The hot water pipe 9 for returning the hot water to the hot water tank 8 is provided with a thermometer 10 for checking the temperature of the hot water and the heating means 52 of the first heat exchanging unit 5, (2), the hot water supply pump (3) and the thermometer (10) are electrically connected and controlled by a separately provided controller (4).

Hereinafter, the configuration of the first to third heat exchanging units 5, 6, and 7 in the present invention will be described in detail.

3 is a cross-sectional view of a first heat exchanger applied to the present invention.

The first heat exchanging part 5 has a thermal body body 51 in which the thermal fluid A is inserted and a thermal fluid body 51 that is expanded when the thermal fluid A is thermally expanded above the thermal fluid body 51 A, and an outer oil tank 54 connected to the second and third heat exchange units 6 and 7 is connected to the outside. In the case of the thermal oil (A), about 3/4 of the heat is absorbed into the fruit body 51 and heated to a temperature of 160 to 180 degrees. At this time, part of the heat is moved to the expansion tank 53 by cooling.

The fruit body gauges 51 may be proposed as a hexahedron or a cylinder, and an electric heater, which is a plurality of heating means 52, is installed in the fruit body gauging 51.

The heating means 52 is assembled in such a manner that the heating means 52 can be easily detached from the fruit body gauges 51. Preferably, the heating means 52 is installed on the fruit body gauges 51 so as to be perpendicular to the ground, Install it.

It is difficult to replace the heating means 52 due to the outflow of the thermal oil A when the heating means 52 is provided at the lower end of the conventional fruit body 51. However, It is possible to replace the heating means 52 without the loss of the thermal oil A.

In the meantime, the heating means 52 provided in the present invention is constructed as shown in FIG. That is, the heating means 52 of the present invention is configured such that the heater rod 52b is coupled to the lower side of the body 52a to be screwed to the assembly hole 55 formed in the fruit body 51, The non-heating portion 52c on the side of the main body 52a and the heating portion 52d on the lower side.

The configuration of the heater rod 52b is such that only the heating portion 52d is immersed in the heating medium oil A while the heating medium oil A is in a non-heated state in a state where the heating rod 52b is inserted in the heating body 51. Therefore, , Only the heating section 52d which is immersed in the heating medium oil A is heated and the non-heating section 52c exposed to the atmosphere is not heated, so that the heating section 52b is heated by the heater rod 52b The generated heat is transferred to the thermal oil A as in the conventional horizontal balance structure to prevent the heat loss due to the heating of the thermal oil A and to solve the problem that the portion coupled with the body 52a is thermally damaged It will be possible.

FIG. 5 is a sectional view of a second heat exchanger applied to the present invention, and FIG. 6 is a side sectional view of FIG. 5.

The second heat exchanging part 6 provided in the present invention is provided with the hot water tank 8 and the third heat exchanging part 7 and the hot water pipe 9 on both sides of the drum type heat storage tank 61 in which the heat storage material B is housed A hot water supply tank 64 and a hot water discharge tank 65 are provided and these hot water supply tanks 64 and hot water discharge tanks 65 are connected to a plurality of hot water heat exchange tubes 63 passing through the heat storage tank 61 Install horizontally.

A heat medium heat exchange tube 62 is spirally arranged outside the hot water heat exchange tube 63 so as to be located in the heat accumulation tank 61. Both ends of the heat medium heat heat exchange tube 62 are connected to the first heat exchange section 5 or 3 heat exchange unit 7 and the heat medium oil pipe 54. [

When the second heat exchanger 6 is constructed as described above, the heat medium oil A supplied in a heated state in the first heat exchanger 5 passes through the spiral heat medium heat exchanger tube 62, The heat storage material B is heated and the heat storage material B is heat-exchanged with the hot water heat exchange tube 63 in a heated state.

7 is a cross-sectional view of a third heat exchanger applied to the present invention.

The third heat exchanging part 7 according to the present invention has a hermetically sealed hot water supply cover 72 which is hemispherically formed on both sides of the second fruit body 71, And a hot water heat exchange pipe 73 for connecting the covers 72 for supplying hot water for both sides is provided.

1 and 2, the hot water pipe 9 is connected to the hot water supply cover 72 and the second heat exchanger 6 and the first heat exchanger 5 are connected to the second heat- And the heat medium oil pipes 54 are connected to each other.

When the third heat exchanging unit 7 is constructed as described above, the heat exchange between hot water and the heat medium oil A having a temperature of 100 degrees or more remaining in the heat medium oil A via the second heat exchanging unit 6 is performed once more It is possible to obtain the effect to be lost.

Therefore, in the case of using the present invention, since the first to third heat exchanging units 7 are constructed as a stand-alone type, the corresponding portions of the first to third heat exchanging units 7 can be easily identified and repaired.

For example, it is possible to easily replace the heating means 52 of the first heat exchanging portion 5 without releasing the heat medium oil A, and to easily repair the leakage portion due to the expansion and contraction of the third heat exchanging portion 7 It will be.

In the figure, reference numeral 11 denotes a valve provided on the heat medium oil pipe 54 for restricting the movement of the heat medium oil A, and 12 denotes a valve provided on the hot water pipe 9 for restricting the movement of hot water. 13 is a safety valve installed in the second heat exchanger 6 to discharge the internal pressure of the heat storage tank 61 when the heat storage material B is thermally expanded.

In the meantime, the heat storage material (B) used in the present invention is the one disclosed in Patent Registration No. 0420008 (2004.03.02) mentioned in the prior art, and a detailed description thereof will be omitted.

In the case of using the present invention configured as described above, not only the hot water can be continuously heated by using the heat stored in the heat storage material (B) heated by the thermal oil (A) 3 can be quickly maintained even if cracks are generated in the welded portion due to expansion and contraction of the heat exchange portions 5, 6,

A drain pipe including a drain valve is additionally provided in the hot water supply tank 64, the second fruit body water tank 71, the hot water tank 8 and the like of the fruit body 51, the heat storage tank 6, So that heat medium oil or hot water can be discharged at any time.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. Therefore, the scope of protection of the present invention should not be limited to the described embodiment, but should be determined by the equivalents as well as the claims that follow.

1: hot water heating device 2: medium-duty pump
3: hot water supply pump 4:
5: first heat exchanger 51: fruit gymnastic
52: Heating means 52a:
52b: heater rod 52c: non-
52d: heating section 53: expansion tank
54: Heat oil pipe 55:
6: second heat exchanger 61:
62: Heat medium heat exchanger tube 63: Hot water heat exchanger tube
64: hot water supply tank 65: hot water discharge tank
7: third heat exchanger 71: second fruit gymnastic
72: hot water supply cover 73: hot water heat exchange tube
8: Hot water tank 9: Hot water pipe
A: Thermal oil B: Heat storage material

Claims (5)

The heating medium 52 heated by the heating means 52 is heated to heat the heat storage material B to be heat-exchanged with the hot water supplied from the hot water tank 8 and the heating means 52 and the heating medium oil A 1. A hot water heating apparatus (1) using a heat medium oil (A) and a heat storage material (B) for controlling a medium useful pump (2) for circulating hot water and a hot water pump (3) circulating hot water by a control unit (4);
A first heat exchanger (5) for heating the thermal oil (A) introduced into the fruit body (51) by an electric heater serving as a heating means (52);
A heating medium heat exchange tube 63 through which the heating medium oil A heated from the first heat exchanging section 5 passes inside the heat storage material B inserted into the heat storage tank 61 and the hot water tank 8 connected to the hot water tank 8 A second heat exchanger (6) for piping and heat exchanging hot water heat exchange tubes (62) through which hot water passes;
The second heat exchanger 6 is connected to the second heat exchanger 6 through which the heat medium oil A returning to the first heat exchanger 5 is introduced into the hot water tank And a third heat exchange unit (7) for piping and heat-exchanging the hot water heat exchange pipe (73) through which the hot water passing through the hot water returning pipe (8) returns.
The heating medium 52 heated by the heating means 52 is heated to heat the heat storage material B to be heat-exchanged with the hot water supplied from the hot water tank 8 and the heating means 52 and the heating medium oil A 1. A hot water heating apparatus (1) using a heat medium oil (A) and a heat storage material (B) for controlling a medium useful pump (2) for circulating hot water and a hot water pump (3) circulating hot water by a control unit (4);
A first heat exchanger (5) for heating the thermal oil (A) introduced into the fruit body (51) by an electric heater serving as a heating means (52);
A heating medium heat exchange tube 63 through which the heating medium oil A heated from the first heat exchanging section 5 passes inside the heat storage material B inserted into the heat storage tank 61 and the hot water tank 8 connected to the hot water tank 8 A second heat exchanger (6) for piping and heat exchanging hot water heat exchange tubes (62) through which hot water passes;
The second heat exchanger 6 in the hot water tank 8 is connected to the inside of the second fruit body 71 in which the heat medium oil A returning from the second heat exchanger 6 to the first heat exchanger 5 is introduced. And a third heat exchanging part (7) for piping and heat exchanging the hot water heat exchange tube (73) so as to be preheated and supplied through the hot water supplied to the hot water heat exchanger Device.
The method according to claim 1 or 2,
Wherein the electric heater serving as the heating means (52) installed in the first heat exchanging part (5) is vertically assembled to the fruit body gauging (51).
The method of claim 3,
The heater rod 52b of the heating means 52 which is inserted into the fruit body 51 includes a non-heating portion 52c and a heating medium portion 52c which are not immersed in the heating medium oil A in the non- And a heating unit (52d) immersed in the heating water (52d).
The method according to claim 1 or 2,
The second heat exchanging unit 6 is provided with a hot water supply tank 64 and a hot water discharge tank 65 on both sides of the thermal storage tank 61 into which the heat storage material B is introduced, The discharge tank 65 is provided with a plurality of hot water heat exchange tubes 62 passing through the heat storage tank 61 horizontally and a heat medium heat exchange tube 63 spirally arranged outside the hot water heat exchange tubes 62 A hot water heating device using thermal oil and heat storage material.

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